http://fastutil.di.unimi.it/: fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists and priority queues with a small memory footprint and fast access and insertion; provides also big (64-bit) arrays, sets and lists, and fast, practical I/O classes for binary and text files.
  • Sebastiano Vigna 
/*
	* Copyright (C) 2002-2019 Sebastiano Vigna
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	*     http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
package it.unimi.dsi.fastutil.floats;
import java.util.SortedSet;
import java.util.Collection;

A type-specific SortedSet; provides some additional methods that use polymorphism to avoid (un)boxing. 
 Additionally, this interface strengthens iterator(), comparator() (for primitive types), SortedSet.subSet(Object, Object), SortedSet.headSet(Object) and SortedSet.tailSet(Object). 
See Also:
/**
 * A type-specific {@link SortedSet}; provides some additional methods that use
 * polymorphism to avoid (un)boxing.
 *
 * <p>
 * Additionally, this interface strengthens {@link #iterator()},
 * {@link #comparator()} (for primitive types),
 * {@link SortedSet#subSet(Object,Object)}, {@link SortedSet#headSet(Object)}
 * and {@link SortedSet#tailSet(Object)}.
 *
 * @see SortedSet
 */
public interface FloatSortedSet extends FloatSet, SortedSet<Float>, FloatBidirectionalIterable {
	
Returns a type-specific BidirectionalIterator on the elements in this set, starting from a given element of the domain (optional operation). 
 This method returns a type-specific bidirectional iterator with given starting point. The starting point is any element comparable to the elements of this set (even if it does not actually belong to the set). The next element of the returned iterator is the least element of the set that is greater than the starting point (if there are no elements greater than the starting point, 
hasNext() will return false). The previous element of the returned iterator is the greatest element of the set that is smaller than or equal to the starting point (if there are no elements smaller than or equal to the starting point, 
hasPrevious() will return false). 
 Note that passing the last element of the set as starting point and calling previous() you can traverse the entire set in reverse order. 
Params:
  • fromElement – 
           an element to start from.
Throws:
Returns:a bidirectional iterator on the element in this set, starting at the
        given element.
/**
	 * Returns a type-specific {@link it.unimi.dsi.fastutil.BidirectionalIterator}
	 * on the elements in this set, starting from a given element of the domain
	 * (optional operation).
	 *
	 * <p>
	 * This method returns a type-specific bidirectional iterator with given
	 * starting point. The starting point is any element comparable to the elements
	 * of this set (even if it does not actually belong to the set). The next
	 * element of the returned iterator is the least element of the set that is
	 * greater than the starting point (if there are no elements greater than the
	 * starting point, {@link it.unimi.dsi.fastutil.BidirectionalIterator#hasNext()
	 * hasNext()} will return {@code false}). The previous element of the returned
	 * iterator is the greatest element of the set that is smaller than or equal to
	 * the starting point (if there are no elements smaller than or equal to the
	 * starting point,
	 * {@link it.unimi.dsi.fastutil.BidirectionalIterator#hasPrevious()
	 * hasPrevious()} will return {@code false}).
	 *
	 * <p>
	 * Note that passing the last element of the set as starting point and calling
	 * {@link it.unimi.dsi.fastutil.BidirectionalIterator#previous() previous()} you
	 * can traverse the entire set in reverse order.
	 *
	 * @param fromElement
	 *            an element to start from.
	 * @return a bidirectional iterator on the element in this set, starting at the
	 *         given element.
	 * @throws UnsupportedOperationException
	 *             if this set does not support iterators with a starting point.
	 */
	FloatBidirectionalIterator iterator(float fromElement);
	
Returns a type-specific BidirectionalIterator on the elements in this set. 
 Note that this specification strengthens the one given in the corresponding type-specific Collection. 

This method returns a parameterised bidirectional iterator. The iterator can
be moreover safely cast to a type-specific iterator.

Returns:a bidirectional iterator on the element in this set.
/**
	 * Returns a type-specific {@link it.unimi.dsi.fastutil.BidirectionalIterator}
	 * on the elements in this set.
	 *
	 * <p>
	 * Note that this specification strengthens the one given in the corresponding
	 * type-specific {@link Collection}.
	 *
	 * <p>
	 * This method returns a parameterised bidirectional iterator. The iterator can
	 * be moreover safely cast to a type-specific iterator.
	 *
	 * @return a bidirectional iterator on the element in this set.
	 */
	@Override
	FloatBidirectionalIterator iterator();
	
Returns a view of the portion of this sorted set whose elements range from fromElement, inclusive, to toElement, exclusive. 
 Note that this specification strengthens the one given in SortedSet.subSet(Object, Object). 
See Also:
/**
	 * Returns a view of the portion of this sorted set whose elements range from
	 * {@code fromElement}, inclusive, to {@code toElement}, exclusive.
	 * <p>
	 * Note that this specification strengthens the one given in
	 * {@link SortedSet#subSet(Object,Object)}.
	 * 
	 * @see SortedSet#subSet(Object,Object)
	 */
	FloatSortedSet subSet(float fromElement, float toElement);
	
Returns a view of the portion of this sorted set whose elements are strictly less than toElement. 
 Note that this specification strengthens the one given in SortedSet.headSet(Object). 
See Also:
/**
	 * Returns a view of the portion of this sorted set whose elements are strictly
	 * less than {@code toElement}.
	 * <p>
	 * Note that this specification strengthens the one given in
	 * {@link SortedSet#headSet(Object)}.
	 * 
	 * @see SortedSet#headSet(Object)
	 */
	FloatSortedSet headSet(float toElement);
	
Returns a view of the portion of this sorted set whose elements are greater than or equal to fromElement. 
 Note that this specification strengthens the one given in SortedSet.headSet(Object). 
See Also:
/**
	 * Returns a view of the portion of this sorted set whose elements are greater
	 * than or equal to {@code fromElement}.
	 * <p>
	 * Note that this specification strengthens the one given in
	 * {@link SortedSet#headSet(Object)}.
	 * 
	 * @see SortedSet#tailSet(Object)
	 */
	FloatSortedSet tailSet(float fromElement);
	
{@inheritDoc}

 Note that this specification strengthens the one given in SortedSet.comparator(). 
/**
	 * {@inheritDoc}
	 * <p>
	 * Note that this specification strengthens the one given in
	 * {@link SortedSet#comparator()}.
	 */
	@Override
	FloatComparator comparator();
	
Returns the first (lowest) element currently in this set.

See Also:
  • first.first()
/**
	 * Returns the first (lowest) element currently in this set.
	 * 
	 * @see SortedSet#first()
	 */
	float firstFloat();
	
Returns the last (highest) element currently in this set.

See Also:
  • last.last()
/**
	 * Returns the last (highest) element currently in this set.
	 * 
	 * @see SortedSet#last()
	 */
	float lastFloat();
	
{@inheritDoc}

Deprecated:Please use the corresponding type-specific method instead.
/**
	 * {@inheritDoc}
	 * 
	 * @deprecated Please use the corresponding type-specific method instead.
	 */
	@Deprecated
	@Override
	default FloatSortedSet subSet(final Float from, final Float to) {
		return subSet(from.floatValue(), to.floatValue());
	}
	
{@inheritDoc}

Deprecated:Please use the corresponding type-specific method instead.
/**
	 * {@inheritDoc}
	 * 
	 * @deprecated Please use the corresponding type-specific method instead.
	 */
	@Deprecated
	@Override
	default FloatSortedSet headSet(final Float to) {
		return headSet(to.floatValue());
	}
	
{@inheritDoc}

Deprecated:Please use the corresponding type-specific method instead.
/**
	 * {@inheritDoc}
	 * 
	 * @deprecated Please use the corresponding type-specific method instead.
	 */
	@Deprecated
	@Override
	default FloatSortedSet tailSet(final Float from) {
		return tailSet(from.floatValue());
	}
	
{@inheritDoc}

Deprecated:Please use the corresponding type-specific method instead.
/**
	 * {@inheritDoc}
	 * 
	 * @deprecated Please use the corresponding type-specific method instead.
	 */
	@Deprecated
	@Override
	default Float first() {
		return Float.valueOf(firstFloat());
	}
	
{@inheritDoc}

Deprecated:Please use the corresponding type-specific method instead.
/**
	 * {@inheritDoc}
	 * 
	 * @deprecated Please use the corresponding type-specific method instead.
	 */
	@Deprecated
	@Override
	default Float last() {
		return Float.valueOf(lastFloat());
	}
}